Rewrite rendering engine (#6253)

* Clean draw_*() arguments

* Split rendering core

* Add anaglyph 3D

* Interlaced 3D

* Drop obsolete methods

1 files changed, 60 insertions, 0 deletions

diff --git a/src/client/render/stereo.cpp b/src/client/render/stereo.cpp
new file mode 100644
index 000000000..eec9f8ced
--- /dev/null
+++ b/src/client/render/stereo.cpp
@@ -0,0 +1,60 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2017 numzero, Lobachesky Vitaly <numzer0@yandex.ru>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "stereo.h"
+#include "camera.h"
+#include "constants.h"
+#include "settings.h"
+
+RenderingCoreStereo::RenderingCoreStereo(
+		IrrlichtDevice *_device, Client *_client, Hud *_hud)
+    : RenderingCore(_device, _client, _hud)
+{
+	eye_offset = BS * g_settings->getFloat("3d_paralax_strength");
+}
+
+void RenderingCoreStereo::beforeDraw()
+{
+	cam = camera->getCameraNode();
+	base_transform = cam->getRelativeTransformation();
+}
+
+void RenderingCoreStereo::useEye(bool right)
+{
+	core::matrix4 move;
+	move.setTranslation(
+			core::vector3df(right ? eye_offset : -eye_offset, 0.0f, 0.0f));
+	cam->setPosition((base_transform * move).getTranslation());
+}
+
+void RenderingCoreStereo::resetEye()
+{
+	cam->setPosition(base_transform.getTranslation());
+}
+
+void RenderingCoreStereo::renderBothImages()
+{
+	useEye(false);
+	draw3D();
+	resetEye();
+	useEye(true);
+	draw3D();
+	resetEye();
+}